Exam 2: Organizing and Visualizing Variables

SCENARIO 2-3 Every spring semester,the School of Business coordinates a luncheon with local business leaders for graduating seniors,their families,and friends.Corporate sponsorship pays for the lunches of each of the seniors,but students must purchase tickets to cover the cost of lunches served to guests they bring with them.The following histogram represents the attendance at the senior luncheon,where X is the number of guests each graduating senior invited to the luncheon and f is the number of graduating seniors in each category. 1 -Referring to the histogram from Scenario 2-3,how many graduating seniors attended the luncheon?

SCENARIO 2-14 The table below contains the number of people who own a portable Blu-ray player in a sample of 600 broken down by gender. -Referring to Scenario 2-13,if a frequency distribution for the amount of detergent used is constructed,using "9.0 but less than 10.0 gallons" as the first class,the frequency of the "11.0 but less than 12.0 gallons" class would be_____ .

SCENARIO 2-2 2-2 Organizing and Visualizing Variables At a meeting of information systems officers for regional offices of a national company,a survey was taken to determine the number of employees the officers supervise in the operation of their departments,where X is the number of employees overseen by each information systems officer. -Referring to Scenario 2-2,across all the regional offices,how many total employees were supervised by those surveyed?

SCENARIO 2-5 The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier. -Referring to Scenario 2-5,if 100 calls were sampled,of---- them would have lasted less than 5 minutes or at least 30 minutes or more.

SCENARIO 2-14 The table below contains the number of people who own a portable Blu-ray player in a sample of 600 broken down by gender. -Referring to Scenario 2-13,if a relative frequency or percentage distribution for the detergent data is constructed,using "9.0 but less than 10.0 gallons" as the first class,what percentage of drive-through car wash operations use at least 10 gallons of detergent in a day?

The percentage polygon is formed by having the lower boundary of each class represent the data in that class and then connecting the sequence of lower boundaries at their respective class percentages.

SCENARIO 2-14 The table below contains the number of people who own a portable Blu-ray player in a sample of 600 broken down by gender. -Referring to Scenario 2-13,if a percentage histogram for the detergent data is constructed,using "9.0 but less than 10.0 gallons" as the first class,what percentage of drive-through car wash operations use less than 12 gallons of detergent in a day?

SCENARIO 2-14 The table below contains the number of people who own a portable Blu-ray player in a sample of 600 broken down by gender. -Referring to Scenario 2-13,if a relative frequency or percentage distribution for the detergent data is constructed,using "9.0 but less than 10.0 gallons" as the first class,what percentage of drive-through car wash operations use at least 10 gallons but less than 13 gallons of detergent in a day?

To compare one large set of numerical data to another,a _____distribution must be developed from the frequency distribution.

In constructing a polygon,each class grouping is represented by its_____ and then these are consecutively connected to one another.

SCENARIO 2-7 The Stem-and-Leaf display below contains data on the number of months between the date a civil suit is filed and when the case is actually adjudicated for 50 cases heard in superior court. -Referring to Scenario 2-7,the civil suit with the fourth shortest waiting time between when the suit was filed and when it was adjudicated had a wait of _____months.

SCENARIO 2-7 The Stem-and-Leaf display below contains data on the number of months between the date a civil suit is filed and when the case is actually adjudicated for 50 cases heard in superior court. -Referring to Scenario 2-7,if a frequency distribution with equal sized classes was made from this data,and the first class was "10 but less than 20," the frequency of that class would be_____ .

A_____ is a vertical bar chart in which the rectangular bars are constructed at the boundaries of each class interval.

SCENARIO 2-9 The frequency distribution below represents the rents of 250 randomly selected federally subsidized apartments in a small town. -Referring to Scenario 2-9,_____apartments rented for at least $1,200 but less than $1,400.

SCENARIO 2-14 The table below contains the number of people who own a portable Blu-ray player in a sample of 600 broken down by gender. -Referring to Scenario 2-13,construct a relative frequency or percentage distribution for the detergent data,using "9.0 but less than 10.0" as the first class.

Given below is the scatter plot of the market value (thousands$)and profit (thousands$)of 50 U.S.companies.There appears to be a negative relationship between market value and profit.

SCENARIO 2-8 The Stem-and-Leaf display represents the number of times in a year that a random sample of 100 "lifetime" members of a health club actually visited the facility. -Referring to Scenario 2-8,if a frequency distribution with equal sized classes was made from this data,and the first class was "0 but less than 10," the frequency of the fifth class would be_____.

A polygon can be constructed from a bar chart.

When you work with many variables,you must be mindful of the limits of the information technology as well as the limits of the ability of your readers to perceive and comprehend your results.

SCENARIO 2-14 The table below contains the number of people who own a portable Blu-ray player in a sample of 600 broken down by gender. -Referring to Scenario 2-14,_____percent of the 600 were females who owned a portable Blu-ray player.